Added layout test for aria-orientation and cleaned up code. Also exposed hr element with an orienta…

Source/modules/accessibility/AXNodeObject.cpp

 /*
  * Copyright (C) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 482 matching lines @@
 
     if (node()->hasTagName(figureTag))
         return FigureRole;
 
     if (node()->nodeName() == "TIME")
         return TimeRole;
 
     if (isEmbeddedObject())
         return EmbeddedObjectRole;
 
+    if (isHTMLHRElement(*node()))
+        return SplitterRole;
+
     return UnknownRole;
 }
 
 AccessibilityRole AXNodeObject::determineAccessibilityRole()
 {
     if (!node())
         return UnknownRole;
 
     if ((m_ariaRole = determineAriaRoleAttribute()) != UnknownRole)
         return m_ariaRole;
@@ skipping 735 matching lines @@
             HTMLInputElement* inputElement = toHTMLInputElement(node());
             placeholder = inputElement->strippedPlaceholder();
         } else if (isHTMLTextAreaElement(*node())) {
             HTMLTextAreaElement* textAreaElement = toHTMLTextAreaElement(node());
             placeholder = textAreaElement->strippedPlaceholder();
         }
     }
     return placeholder;
 }
 
+AccessibilityOrientation AXNodeObject::orientation() const
+{
+    const AtomicString& ariaOrientation = getAttribute(aria_orientationAttr);
+    AccessibilityOrientation orientation = AccessibilityOrientationUndefined;
+    if (equalIgnoringCase(ariaOrientation, "horizontal"))
+        orientation = AccessibilityOrientationHorizontal;
+    else if (equalIgnoringCase(ariaOrientation, "vertical"))
+        orientation = AccessibilityOrientationVertical;
+
+    switch (roleValue()) {
+    case ComboBoxRole:
+    case ListBoxRole:
+    case MenuRole:
+    case ScrollBarRole:
+    case TreeRole:
+        if (orientation == AccessibilityOrientationUndefined)
+            orientation = AccessibilityOrientationVertical;
+
+        return orientation;
+    case MenuBarRole:
+    case SliderRole:
+    case SplitterRole:
+    case TabListRole:
+    case ToolbarRole:
+        if (orientation == AccessibilityOrientationUndefined)
+            orientation = AccessibilityOrientationHorizontal;
+
+        return orientation;
+    case RadioGroupRole:
+    case TreeGridRole:
+    // TODO(nektar): Fix bug 532670 and remove table role.
+    case TableRole:
+        return orientation;
+    default:
+        return AXObject::orientation();
+    }
+}
+
 String AXNodeObject::text() const
 {
     // If this is a user defined static text, use the accessible name computation.
     if (ariaRoleAttribute() == StaticTextRole)
         return ariaAccessibilityDescription();
 
     if (!isTextControl())
         return String();
 
     Node* node = this->node();
@@ skipping 1516 matching lines @@
     return textAlternative;
 }
 
 DEFINE_TRACE(AXNodeObject)
 {
     visitor->trace(m_node);
     AXObject::trace(visitor);
 }
 
 } // namespace blink